A reaction engine is an engine or motor which provides propulsion (thrust) by expelling reaction mass, in accordance with Newton's third law of motion. This law of motion is most commonly paraphrased as: "For every action force there is an equal, but opposite, reaction force".
Alexandru Ciurcu was a Romanian inventor and publisher, famous for his invention with Just Buisson of a reaction engine. It used rocket propulsion and was successfully used to power to boat in 1886.The two men envisioned that such motors would later be used for air travel.
